#include <cstdio>

/**
 * @Author ZhangGJ
 * @Date 2021/11/11 23:00
 */

int abc(int &a, int &b, int &c)
{
    a = a + 1;
    return a + b * c;
}

int main()
{
    int a, b, c;
    a = 1;
    b = 2;
    c = 3;
    printf("%d\n", abc(a, b, c));
    printf("%d\n", a);
    printf("%d\n", b);
    printf("%d\n", c);
}
